Administrative Distance Explained: A Dallas Travel Story (CCNA by CCNAGuru)

๐Ÿค  The Dallas Adventure Administrative Distance (AD) CCNA by CCNAGuru ๐Ÿ“ Dallas ยท Ft. Worth ยท Online ๐ŸŽฅ a travel story that teaches networking ๐Ÿ“Œ CCNA certification Dallas โšก exam discount 2026 ๐ŸŒ† Picture this: You’re finally taking that dream trip to Dallas, Texas. You wanna experience the real deal โ€“ sizzling BBQ in Deep … Read more

Best Online CCNA Tutor in USA: Mr. Saeed Ahmad (CCNAGuru) – 18+ Years Cisco Expert

Master Cisco Networking with America’s Premier CCNA Guru: Mr. Saeed Ahmad In the dynamic world of IT networking, having the right mentor can mean the difference between certification and mastery, between a job and a career. For aspiring network engineers across the United States, one name stands above the rest: Mr. Saeed Ahmad, widely recognized … Read more

Is CSMA/CD Still Used? Understanding Ethernet’s Collision Detection Legacy

Introduction: What is CSMA/CD? Carrier Sense Multiple Access with Collision Detection (CSMA/CD) is a network access method that was fundamental to early Ethernet networks. Its primary role was to orchestrate how devices shared a common communication medium (like a coaxial cable or a hub-based network segment) and to elegantly handle “collisions” โ€“ instances where multiple … Read more

Monitoring Traffic on a Cisco Router Interface

Monitoring traffic on a Cisco router interface is crucial for network administrators to ensure optimal performance, diagnose issues, and manage bandwidth effectively. This article provides an in-depth look at the commands used to check incoming and outgoing traffic on Cisco router interfaces. 1. Accessing the Router Before running any commands, you need to access the … Read more

Solution: Could not find an iourc file (IOU license), please configure an IOU license

Activate Cisco IOU License in GNS3 Introduction: GNS3 is a powerful network simulation tool used by networking professionals for testing and learning purposes. One of its features is the ability to run Cisco IOU (IOS on Unix) images for virtualizing Cisco routers and switches. However, to use Cisco IOU images legally, you need to activate … Read more

Cisco VLAN Trunks and EtherChannel Bundles Cheat Sheet

VTP Configuration Commands: Task Command Syntax Configure the VTP version vtp version {1 | 2 | 3} Configure the VTP domain name vtp domain domain-name Configure the VTP mode for a switch vtp mode { server | client | transparent | none} Configure a switch to become the primary VTP server vtp primary Switchport and … Read more

The Crucial Role of Networking Fundamentals in Cybersecurity Certifications

In the ever-evolving landscape of cybersecurity, the need for skilled professionals who can safeguard networks and data has never been greater. The journey to becoming a cybersecurity expert often begins with certifications, and while there are various paths to choose from, one common thread among them is the fundamental knowledge of networking and routing. In … Read more

Demystifying OSPF Routing: A Comprehensive Guide to Cisco IOS Commands

show running-config: This command displays the current configuration of the device, including all the configured settings. show ip protocols: This command displays information about the IP routing protocols enabled on the device, including OSPF. show ip ospf interface: This command shows detailed information about OSPF interfaces, including their state, cost, and other parameters. show ip … Read more

Lab Equipment Packet Tracer 9.0

The Essential Equipment & Software List Ready to dive deep into the world of networking? Whether you’re setting up a home lab for Cisco studies, outfitting a classroom, or just curious about the building blocks of the internet, having the right gear is crucial. This guide breaks down the recommended baseline equipment and software to … Read more

Demystifying Inter-VLAN Routing with Layer 3 Switch SVI Interfaces: A Comprehensive Guide

Objective: To understand how to work with inter-VLAN routing using Layer 3 switch SVI (Switched Virtual Interface) interface. Steps to Configure Inter-VLAN Routing: 1. Configure VLANs: Start by creating the VLANs you want to use for inter-VLAN routing. Assign unique VLAN IDs and assign the required interfaces to their respective VLANs. 2. Enable IP routing: … Read more